The SM4T68A from STMicroelectronics is a robust Transil™ diode designed to provide high surge voltage protection in a compact SOD-123FL package. This transient voltage suppressor (TVS) is specifically engineered to protect sensitive electronic equipment against voltage transients induced by both system level and external events such as lightning, load switch, and inductive load.

Key Features

• Stand-off voltage: 68V - This parameter ensures that under normal conditions, the voltage across the device does not exceed the specified value, thereby protecting the circuit.
• Peak pulse power: 400W (10/1000μs) - The SM4T68A can handle a maximum of 400 watts peak pulse power for a 10/1000μs waveform, which is critical for absorbing high-energy surges without damage.
• Low clamping factor: The low clamping voltage of the SM4T68A minimizes the stress on the protected component during a transient event.
• Fast response time: The device reacts quickly to surges, ensuring that the sensitive components are shielded from the surge as soon as it occurs.
• Low leakage current: Minimizing the current leakage helps to reduce power loss and increase the efficiency of the overall system.

Applications

The SM4T68A is suitable for a variety of applications where transient voltage protection is critical. These include:

• Power supply lines
• Communication systems
• Automotive electronics
• Industrial systems
• Consumer electronics

Quality and Reliability

STMicroelectronics is renowned for its commitment to quality and reliability. The SM4T68A is no exception and is manufactured to meet the highest industry standards for performance and durability. It is RoHS compliant and characterized by its junction temperature range of -40°C to 150°C, making it suitable for various operating environments.

For detailed product specifications, technical datasheets, application notes, and support resources, visit the STMicroelectronics website or contact their support team.